I was planning to deploy gnome-fallback for my clients but I found that it's unusable for non-xinerama dual-head (Zaphod) mode. There's also some bugs with detecting when an application has loaded (hour-glass cursor even when the application window opens) and various compatibility problems with add-ons and the notification area. I'm planning to use XFCE with the Linux Mint menus. It's not perfect but has better long-term prospects. The problems that prevented me from using it before, the disappearing desktop panels and lack of integrated smb network browsing in Thunar, have been fixed.
No announcement yet.
Ubuntu To Consider Ridding GNOME Fallback Code